A new global oceanic multi-model net primary productivity data product

Autor: T. J. Ryan-Keogh, S. J. Thomalla, N. Chang, T. Moalusi

Publikováno v: Earth System Science Data, Vol 15, Pp 4829-4848 (2023)

Net primary production of the oceans contributes approximately half of the total global net primary production, and long-term observational records are required to assess any climate-driven changes. The Ocean Colour Climate Change Initiative (OC-CCI)

Externí odkaz: https://doaj.org/article/8f897c63bdb8465799ba4c67337ce537

Controls on nitrite oxidation in the upper Southern Ocean: insights from winter kinetics experiments in the Indian sector

Autor: M. Mdutyana, T. Marshall, X. Sun, J. M. Burger, S. J. Thomalla, B. B. Ward, S. E. Fawcett

Publikováno v: Biogeosciences, Vol 19, Pp 3425-3444 (2022)

Across the Southern Ocean in winter, nitrification is the dominant mixed-layer nitrogen cycle process, with some of the nitrate produced therefrom persisting to fuel productivity during the subsequent growing season. Because this nitrate constitutes

Externí odkaz: https://doaj.org/article/5cba833591344ed29bfcf1914e9f1a14

Modelled estimates of spatial variability of iron stress in the Atlantic sector of the Southern Ocean

Autor: T. J. Ryan-Keogh, S. J. Thomalla, T. N. Mtshali, H. Little

Publikováno v: Biogeosciences, Vol 14, Pp 3883-3897 (2017)

The Atlantic sector of the Southern Ocean is characterized by markedly different frontal zones with specific seasonal and sub-seasonal dynamics. Demonstrated here is the effect of iron on the potential maximum productivity rates of the phytoplankt

Externí odkaz: https://doaj.org/article/5b223c955dfb478fb1b7de47d48fca06

Regional scale characteristics of the seasonal cycle of chlorophyll in the Southern Ocean

Autor: S. J. Thomalla, N. Fauchereau, S. Swart, P. M. S. Monteiro

Publikováno v: Biogeosciences, Vol 8, Iss 10, Pp 2849-2866 (2011)

In the Ocean, the seasonal cycle is the mode that couples climate forcing to ecosystem response in production, diversity and carbon export. A better characterisation of the ecosystem's seasonal cycle therefore addresses an important gap in our abilit

Externí odkaz: https://doaj.org/article/6abfe2684299426d81d2f9289a514fed

Seasonal depletion of the dissolved iron reservoirs in the sub‐Antarctic zone of the Southern Atlantic Ocean

Autor: Thomas J. Ryan-Keogh, Géraldine Sarthou, N. R. van Horsten, S. J. Thomalla, S.-A. Nicholson, Alakendra N. Roychoudhury, T. N. Mtshali, Eva Bucciarelli, Alessandro Tagliabue, P. Monteiro

Publikováno v: Geophysical Research Letters (0094-8276) (American Geophysical Union (AGU)), 2019-04, Vol. 46, N. 8, P. 4386-4395
Geophysical Research Letters
Geophysical Research Letters, 2019, 46 (8), pp.4386-4395. ⟨10.1029/2018GL081355⟩
Geophysical Research Letters, American Geophysical Union, 2019, 46 (8), pp.4386-4395. ⟨10.1029/2018GL081355⟩
GEOPHYSICAL RESEARCH LETTERS

Seasonal progression of dissolved iron (DFe) concentrations in the upper water column were examined during four occupations in the Atlantic sector of the Southern Ocean. DFe inventories from euphotic and aphotic reservoirs decreased progressively fro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c05c48e2ccba9f92d826a2896b195d04
https://archimer.ifremer.fr/doc/00487/59914/